After performing a huge concert, Miku Izayoi invited Shido, Tohka and everyone for a day at a reserved indoor pool. Later at night, Shido keeps spotting a girl named Mayuri, who quickly disappeared after seeing her.
Izayoi, Asuka, and You have been invited to participate in a Gift-Game at a hot spring village to help the small community there find a new water source. OVA bundled with the eighth volume of the light novel.
